Help: churn

Find changesets by keywords (author, files, the commit message), revision
number or hash, or revset expression.

hg churn [-d DATE] [-r REV] [--aliases FILE] [FILE]

histogram of changes to the repository

This command will display a histogram representing the number
of changed lines or revisions, grouped according to the given
template. The default template will group changes by author.
The --dateformat option may be used to group the results by
date instead.

Statistics are based on the number of changed lines, or
alternatively the number of matching revisions if the
--changesets option is specified.